23
CDJ-2000NXS
5
6
7
8
5
6
7
8
A
B
C
D
E
F
1
Loose connections
in the communi-
cation line.
SDCB Assy,
MAI
N
Assy
Check the connection of the SD serial
communication line.
If connection is improper, resolder it.
—————
2
Defective
MAI
N
CPU
MAI
N
Assy
If the symptom persists after the above
corrections.
The MAI
N
CPU (IC10) is defective.
Replace the MIA
N
Assy.
—————
3
Defective
MAI
N
CPU
MAI
N
Assy
Check the periphery circuit of the MAI
N
CPU.
Check the periphery of the MAI
N
CPU (IC10).
If no problem is found, the MAI
N
CPU may be
defective. Replace the MAI
N
Assy.
—————
1
Loose connections
in the communi-
cation line.
MAI
N
Assy
Check the connection of the periphery
circuit of ETHER (IC704).
If connection is improper, resolder it.
—————
2
Loose connections
in the communi-
cation line.
SR
V
B Assy,
MAI
N
Assy
Check the connection of the ATAPI lines.
Check the connection between the MAI
N
CPU
(IC10) and SODC (IC7006). If no problem is
found, see “[9] DRI
V
E ASSY.” If the symptom
persists after those corrections, go to Step 3.
—————
2
Defective
ETHER PHY device
LA
N
jack
or
MAI
N
CPU
MAI
N
Assy
If the symptom persists after the above
corrections.
The ETHER PHY device (IC704) or LA
N
jack
(JA702) may be defective.
Replace it. If the symptom persists, the MAI
N
CPU (IC10) may be defective.
Replace the MAI
N
Assy.
—————
1
Improper
RESET signal
SR
V
B Assy,
MAI
N
Assy
Check the ATA_RESET signal (C
N
7005).
Communication will not start while the ATA_RESET signal
is L. Check the connection between the MAI
N
CPU (IC10)
and SODC (IC7006). If the connection is not properly made,
correct it. If no problem is found, see “[9] DRI
V
E ASSY.”
If the signal does not become H after those corrections, go
to Step 2.
—————
1
Power is not
supplied properly.
MAI
N
Assy,
JACB Assy
Check the power voltages (
V
+12A,
V
-12A,
V
+5_DAC) for audio.
Each power-supply may be loosely connected or
may be defective. Correct loose connection.
If the symptom persists, replace the defective part.
—————
2
Defective
MUTE signal
MAI
N
Assy
Check the signal from Pin 9 of C
N
501
(MUTE). Playback is muted when the si
gnal is at +12
V
.
The connection, transistor, or DSP may be
defective. Correct loose connection. If the
symptom persists, replace the defective part.
—————
3
Loose connections
in the signal line.
MAI
N
Assy,
JACB Assy
Check the connection of the audio signal
lines (ROUT, LOUT).
If connection is improper, resolder it.
If connection is proper, go to 4.
—————
4
Power is not
supplied properly,
or the DAC or
DSP is defective.
MAI
N
Assy,
JACB Assy
Check the voltages (
V
+5,
V
+5_DAC) of
the DAC (IC505).
Each power-supply may be loosely connected or
may be defective. Correct loose connection.
If the symptom persists, replace the defective part.
—————
1
Loose connections
in the signal line.
MAI
N
Assy,
JACB Assy
Check the digital audio signal (SPDIF)
and its connection.
If connection is improper, resolder it. If the SPDIF
signal cannot be recognized, go to Step 3.
—————
3
Defective
MAI
N
DSP
MAI
N
Assy
If the symptom persists after the above
corrections.
Replace the MAI
N
Assy.
—————
2
Defective
transistor
MAI
N
Assy
Check the digital audio signal
(SPDIF_OUT) and its connection.
If the SPDIF_OUT signal can be recognized, then the
transistor (Q504) may be defective. Check the connection.
If no problem is found, replace the transistor. If the
SPDIF_OUT signal cannot be recognized, check the
connection. If soldering is improper, resolder it.
—————
[4-3] The SD card cannot be recognized.
Check the following, with an SD card inserted in the SD connector.
[5] LAN
[5-1]
N
o LA
N
communication
[6] ATAPI DRIVE
[6-1]
N
o disc playback (Although loading and disc rotation can be performed properly, no track data are output.)
[7] AUDIO OUT
[7-1]
N
o sound
Check the following, with a peripheral device connected to the Ethernet connector.
The analog audio signal is not output.
The digital audio signal is not output.
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
No.
Cause
Diagnostics Point
Item to be Checked
Corrective Action
Reference
